[John Maverick]

Yesterday I added 3 columns to a library with 30K of books downloaded with the plugin FanFicFare. The problem is that after doing the restart that Calibre asked, the column "last_modified" for all the books was changed to yesterday date. So now I can't use that column to sort my books for last updated (or at last last changed).

There is some way to recover the original values of "last_modified" column?

I do have backups of my library, but I was hoping to use them as a last resort.

Also, Is changing the is the last_modified column to the current time the expected behavior when adding new columns to a library?

Calibre v6.1.0
SO: Linux Mint 20.3 “Una”

if that is the case, there is some way to add new columns to a library without changing the last_modified column?

Thanks in advance.